Ductulator Hvac Duct Sizing Calculator 1998

Air duct also termed as ductulator is a passage that is used to provide fresh air into rooms buildings etc air ducts may be in circular square and in rectangular shapes.

Ductulator hvac duct sizing calculator 1998.

This free ductulator calculates the exact duct size round and rectangular for the given friction rate duct type and amount of airflow. This online air duct calculator is used to calculate the velocity of air flow feet per minute fpm and feet per second fps through any shaped circle square or rectangle ductulator with either diameter sides or area. This ductulator uses the colebrook equation to calculate the smallest duct size acceptable for the selected friction rate and duct type that stays within the selected acca manual d recommended velocities. Rectangular duct is rounded up to the nearest 1 4 inch.

Convert rectangular duct to round equivalent. Enter duct airflow cfm duct velocity fpm duct length and the number of bends. It will automatically adjust the size to keep from exceeding the maximum manual d velocities for residential duct systems. Sheet metal duct friction loss calculator.

Friction rate velocity friction rate. Include fittings in the duct tel enter either. Read round duct diameter inches and friction loss per 100 of duct inches of water. In wg duct tel.

Metal ductboard flex size by.